Well,
by rights I've not reached a level of experience to really get too in depth here.
http://www.boeing.com/commercial/air...s/7772sec3.pdf
I was going to attempt to figure it out but I can't find comparable stats on Airbus' website. Heres some charts from Boeing for that half of the Eq.
Looks Like the 777-300 allows a ZFW around 480,000#/220,000Kg at 4000nm. OEW of the baseline version (not high gross weight option) at the high end appears to be 299,550#/135,850Kg. Total payload 180,450#/ 84,150Kg (minus the pax @ 375*170#=63750#/28977Kg, then there is the luggage, whats the allowance again?) ~100,000# @std atm? Maybe Im in over my head-its 3 years since I was taught this and I haven't had to use it since.
I would hazard a
guess that since you are talking about the -300 airbus, it will be performance limited before it hits the airframe limit, especially if its hot.
I am interested to hear what those more experienced have to say (so kindly don't crucify me if I am wrong)
FlyVMO